NBBI NB 23 (NBIC) Part 3 - Repairs and alternations: 2021
National Board Inspection Code – NBIC Part 3 – Repairs and alterations, 2021 edition
The National Board Inspection Code (NBIC) was first published in 1946 as a guide for chief inspectors. It has become an internationally recognized standard, adopted by most US and Canadian jurisdictions. The NBIC provides standards for the installation, inspection, and repair and/or alteration of boilers, pressure vessels, and pressure relief devices.
Part 1 – Installation
Part 2 – Inspection
Part 3 – Repairs and alterations
Part 4 – Pressure relief devices
The NBIC is organized into four (4) Parts to coincide with specific post-construction activities involving pressure-retaining items.
This Part provides information and guidance to perform, verify, and document acceptable repairs or alterations to pressure-retaining items regardless of code of construction. Alternative methods for examination, testing, heat treatment, etc., are provided when the original code of construction requirements cannot be met. Specific acceptable and proven repair methods are also provided.
Published every other year
NBIC, NB23-2021